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Date:      Thu, 12 Nov 2009 21:18:11 -0500
From:      Scott Ullrich <sullrich@gmail.com>
To:        "Sam Fourman Jr." <sfourman@gmail.com>
Cc:        Rick Macklem <rmacklem@uoguelph.ca>, Dan Nelson <dnelson@allantgroup.com>, Artem Belevich <fbsdlist@src.cx>, freebsd-current@freebsd.org, Ivan Voras <ivoras@freebsd.org>
Subject:   Re: Help ZFS FreeBSD 8.0 RC2 Write performance issue
Message-ID:  <d5992baf0911121818r72108407h3744e24e04512e1f@mail.gmail.com>
In-Reply-To: <11167f520911121813v29441ac4v2e3dfa6f4386ba4e@mail.gmail.com>
References:  <11167f520911111050j36dd94far667c81e6f5c18e69@mail.gmail.com>  <Pine.GSO.4.63.0911121147310.9126@muncher.cs.uoguelph.ca>  <11167f520911121044l74744c30u5a4d9ca008ab863c@mail.gmail.com>  <d5992baf0911121048o76c1543el2b4d9de84ffb107@mail.gmail.com>  <11167f520911121101o403751ddmb544dfaf1c61bf1e@mail.gmail.com>  <ed91d4a80911121219sa0f3fa3s934791725028a966@mail.gmail.com>  <d5992baf0911121314k7f535f2cra2d3e8367774d8ca@mail.gmail.com>  <11167f520911121339y4161a1a2sae8b6196c3b7a1fb@mail.gmail.com>  <d5992baf0911121643r13a6e87bx33efa0a3ec4ef463@mail.gmail.com>  <11167f520911121813v29441ac4v2e3dfa6f4386ba4e@mail.gmail.com>

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On Thu, Nov 12, 2009 at 9:13 PM, Sam Fourman Jr. <sfourman@gmail.com> wrote:
> and this was with ZFS over NFS? My problem and the reason I started this thread
> I am getting less than 20MB/sec writes, with 6 SATAII disks attached
> to a single Arcera 1130 card

Yes

> so you are suggesting that it is possible that 2x SSD disks would get
> me the other 60MB/sec

I am unsure of your final numbers but it made a huge improvement
taking it from intolerable to more than tolerable.  I would give it a
shot.

Scott



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